Nomad emblems

My mom came across these emblems and wanted to know if they were worth any money. I'm not sure what car they are off of. My first thought was a Chevy Nomad but I check some reproduction emblem sites and can't find anything similar. Found one on ebay for $200 price but seller didn't know what year Nomad and thought it belonged on a Chevy.

So anybody know what year and make car they belong on ?